All-optical tunable photonic crystal NOR gate based on the nonlinear Kerr effect in a silicon nanocavity

被引：19
|
作者：
Afzal, Shirin [1 ]
Ahmadi, Vahid [1 ]
Ebnali-Heidari, Majid [2 ]
机构：
[1] Tarbiat Modares Univ, Dept Elect & Comp Engn, Tehran, Iran
[2] Shahrekord Univ, Fac Engn, Shahrekord, Iran
来源：
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2013年 / 30卷 / 09期
关键词：
CHANNEL-DROP FILTER; LOGIC GATES; MODULATION;
D O I：
10.1364/JOSAB.30.002535
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A tunable NOR gate based on the Kerr effect in silicon-rod-based photonic crystals is presented. The proposed gate consists of two-dimensional photonic crystal add-drop filters with wavelength-selective reflector cavities, which are aligned in series with each other. The main feature of this structure is the enhancement of nonlinear phenomena caused by strong light localization in the photonic crystal nanocavities. Because of this feature, the designed NOR gate can control the amount of dropped probe signal light and change the gate output. The operation of the proposed gate is investigated numerically by using the finite-difference time domain method. The results reveal that the power levels of 0, 1, and uncertain states can be changed by appropriate adjustment of the probe signal frequency. (C) 2013 Optical Society of America
引用
收藏
页码：2535 / 2539
页数：5
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